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A mystery predator is turning South Africa's Kruger National Park into a slaughterhouse. Animals are mysteriously dying and rangers fear the silent assassin could target the endangered black rhino next. Anthrax is suspected, but a new clue takes the investigators in a whole other direction. In North Carolina, a hairless creature with the body of a deer, face of a kangaroo and tail of a cat is caught on film. Experts are baffled - is it a mutant animal, a hybrid or a creature unknown to science?